we're running the HelloWorld example from the Realsense 2.0 SDK (version 2.8.2) in Release mode on a Windows 10 machine (i5 CPU, 8GB RAM) using the D435 sensor (USB-3). According to the Windows task manager HelloWorld.exe is consuming 85% CPU and "System Interrupts" is consuming another 10%. This definitely sounds way too high.

For comparison if we run a grabbing loop with a Primesense Carmine the overall CPU load is around 12%.